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A New Method Which Combines Arithmetic Coding with RLE for Lossless Image Compression

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Author(s): Med Salim Bouhlel | Atef Masmoudi | Med Karim Abdmouleh

Journal: Advances in Molecular Imaging
ISSN 2161-6728

Volume: 05;
Issue: 01;
Start page: 41;
Date: 2012;
Original page

Keywords: Adaptive Arithmetic Coding | Static Arithmetic Coding | Arithmetic Coding | Lossless Compression Image | Run Length Encoding

ABSTRACT
This paper presents a new method of lossless image compression. An image is characterized by homogeneous parts. The bit planes, which are of high weight are characterized by sequences of 0 and 1 are successive encoded with RLE, whereas the other bit planes are encoded by the arithmetic coding (AC) (static or adaptive model). By combining an AC (adaptive or static) with the RLE, a high degree of adaptation and compression efficiency is achieved. The proposed method is compared to both static and adaptive model. Experimental results, based on a set of 12 gray-level images, demonstrate that the proposed scheme gives mean compression ratio that are higher those compared to the conventional arithmetic encoders.

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